APA-viite (7. p.)
Ryan, M. A. (2011). A kingdom of stargazers: Astrology and authority in the late medieval crown of Aragon. Cornell University Press.
Chicago-viite (17. p.)
Ryan, Michael A. A Kingdom of Stargazers: Astrology and Authority in the Late Medieval Crown of Aragon. Ithaca: Cornell University Press, 2011.
MLA-viite (9. p.)
Ryan, Michael A. A Kingdom of Stargazers: Astrology and Authority in the Late Medieval Crown of Aragon. Cornell University Press, 2011.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.